Submission #1028888

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028888		DorostWef	Ancient Books (IOI17_books)	C++17	0 / 100	0 ms	348 KiB

books

#include "books.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

const int N = 1000123;
bool vis[N];
int n;

long long minimum_walk(std::vector<int> p, int s) {
	long long ans = 0;
	n = (int)p.size();
	for (int i = 0; i < n; i++) {
		vis[i] = false;
	}
	for (int i = 0; i < n; i++) {
		ans += abs (p[i] - i);
	}
	int mx = 0;
	for (int i = 0; i < n; i++) {
		if (!vis[i]) {
			mx = i;
			int j = i;
			while (p[j] != i) {
				j = p[j];
				vis[j] = true;
			}
		}
	}
	return ans + 2 * mx;
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 10
• Subtask 3: 0 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30